|2 Add a new layer (Layers>New Raster Layer)
Pick the Drawing Tool and while holding down the [Shift] key, draw a straight line as shown.
Drawing Tool Settings:
Type = Single Line
Width = 30
Antialias = checked
Create as Vector = NOT checked
Close Path = NOT checked
Under Draw Option Tab , choose the Round cap
Press [CTRL+A] to select all object on your current layer. Pick the Selection Tool click your mouse once anywhere on your image, you will notice the line becomes your active selection. Save this selection to Alpha Channel (Selections>Save to Alpha Channel) and name this selection Bar.